Self-proclaimed "foodologist" Lisa Lillien, known as Hungry Girl, knows a thing or two about diet and weight loss; the former Nickelodeon exec built a massive email following by sharing tips on how to eat smart. Since she loves to eat and eat out, we wanted to know: how does she do it? We spoke to Lisa and found out: with careful planning, smart food swaps, and a few skills in the kitchen, you can eat (almost) what you want, and never go hungry.